I need help identifying the year and value of a revolver I got from my grandfather. I was told it was his sidearm in World War II. On the barrel it says "38 S&W Special CTG". The bluing is in very good condition, the gun still fires (although it has not been fired in 20+ years), and to the best of my knowledge, all parts are original. The serial number on the butt is 503109. Below are pictures of both sides of the gun.